/**
 * 通用js方法封装处理
 * Copyright (c) 2020 Luban7
 */

import { axios } from '@/utils/request'

const baseURL = process.env.VUE_APP_BASE_API

const mimeMap = {
	xlsx: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
	zip: 'application/zip',
	xml: 'application/xml'
}

const fileNames = {
	xlsx: 'luban7.xlsx',
	zip: 'luban7.zip',
	xml: 'luban7.xml'
}

// 日期格式化
export function parseTime (time, pattern) {
	if (arguments.length === 0 || !time) {
		return null
	}
	const format = pattern || '{y}-{m}-{d} {h}:{i}:{s}'
	let date
	if (typeof time === 'object') {
		date = time
	} else {
		if ((typeof time === 'string') && (/^[0-9]+$/.test(time))) {
			time = parseInt(time)
		} else if (typeof time === 'string') {
			time = time.replace(new RegExp(/-/gm), '/')
		}
		if ((typeof time === 'number') && (time.toString().length === 10)) {
			time = time * 1000
		}
		date = new Date(time)
	}
	const formatObj = {
		y: date.getFullYear(),
		m: date.getMonth() + 1,
		d: date.getDate(),
		h: date.getHours(),
		i: date.getMinutes(),
		s: date.getSeconds(),
		a: date.getDay()
	}
	// eslint-disable-next-line camelcase
	const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
		let value = formatObj[key]
		// Note: getDay() returns 0 on Sunday
		if (key === 'a') { return ['日', '一', '二', '三', '四', '五', '六'][value] }
		if (result.length > 0 && value < 10) {
			value = '0' + value
		}
		return value || 0
	})
	// eslint-disable-next-line camelcase
	return time_str
}

// 表单重置
export function resetForm (refName) {
	if (this.$refs[refName]) {
		this.$refs[refName].resetFields()
	}
}

// 添加日期范围
export function addDateRange (params, dateRange) {
	var search = params
	search.beginTime = ''
	search.endTime = ''
	// eslint-disable-next-line eqeqeq
	if (dateRange != null && dateRange != '') {
		search.beginTime = this.dateRange[0]
		search.endTime = this.dateRange[1]
	}
	return search
}

// 回显数据字典
export function selectDictLabel (datas, value) {
	var actions = []
	Object.keys(datas).some((key) => {
		if (datas[key].dictValue === ('' + value)) {
			actions.push(datas[key].dictLabel)
			return true
		}
	})
	return actions.join('')
}

// 回显数据字典（字符串数组）
export function selectDictLabels (datas, value, separator) {
	var actions = []
	var currentSeparator = undefined === separator ? ',' : separator
	var temp = value.split(currentSeparator)
	Object.keys(value.split(currentSeparator)).some((val) => {
		Object.keys(datas).some((key) => {
			if (datas[key].dictValue === ('' + temp[val])) {
				actions.push(datas[key].dictLabel + currentSeparator)
			}
		})
	})
	return actions.join('').substring(0, actions.join('').length - 1)
}

// 通用下载方法
export function download (fileName) {
	window.location.href = baseURL + '/common/download?fileName=' + encodeURI(fileName) + '&delete=' + true
}

// 字符串格式化(%s )
export function sprintf (str) {
	var args = arguments; var flag = true; var i = 1
	str = str.replace(/%s/g, function () {
		var arg = args[i++]
		if (typeof arg === 'undefined') {
			flag = false
			return ''
		}
		return arg
	})
	return flag ? str : ''
}

// 转换字符串，undefined,null等转化为""
export function praseStrEmpty (str) {
	if (!str || str === 'undefined' || str === 'null') {
		return ''
	}
	return str
}

/**
 * 构造树型结构数据
 * @param {*} data 数据源
 * @param {*} id id字段 默认 'id'
 * @param {*} parentId 父节点字段 默认 'parentId'
 * @param {*} children 孩子节点字段 默认 'children'
 * @param {*} rootId 根Id 默认 0
 */
export function handleTree (data, id, parentId, children, rootId) {
	id = id || 'id'
	parentId = parentId || 'parentId'
	children = children || 'children'
	rootId = rootId || Math.min.apply(Math, data.map(item => { return item[parentId] })) || 0
	// 对源数据深度克隆
	const cloneData = JSON.parse(JSON.stringify(data))
	// 循环所有项
	const treeData = cloneData.filter(father => {
		const branchArr = cloneData.filter(child => {
			// 返回每一项的子级数组
			return father[id] === child[parentId]
		})
		// eslint-disable-next-line no-unused-expressions
		branchArr.length > 0 ? father.children = branchArr : ''
		// 返回第一层
		return father[parentId] === rootId
	})
	return treeData !== '' ? treeData : data
}

export function exportExcel (url, params) {
	axios({
	url: url,
	method: 'post',
	params: params
	}).then(res => {
	if (res.code === 0) {
	downloadXlsx(res.msg)
	}
	})
  }

/**
 * 下载.xlsx文件
 * @param {String} filename 文件名
 */
export function downloadXlsx (filename) {
	axios({
	url: '/common/download',
	method: 'get',
	params: { fileName: filename, delete: true },
	responseType: 'blob'
}).then(res => {
	resolveBlob(res, mimeMap.xlsx, fileNames.xlsx)
})
}

/**
* 代码生成并下载为zip
* @param {String} url 链接
* @param {String} tables 表名
*/
export function genCodeZip (url, tables) {
	axios({
	url: url,
	method: 'get',
	params: { tables: tables },
	responseType: 'blob'
}).then(res => {
	resolveBlob(res, mimeMap.zip, fileNames.zip)
})
}

/**
 * 解析blob响应内容并下载
 * @param {*} res blob响应内容
 * @param {String} mimeType MIME类型
 */
export function resolveBlob (res, mimeType, fileName) {
	const aLink = document.createElement('a')
	var blob = new Blob([res], { type: mimeType })
	// //从response的headers中获取filename, 后端response.setHeader("Content-disposition", "attachment; filename=xxxx.docx") 设置的文件名;
	// var patt = new RegExp('filename=([^;]+\\.[^\\.;]+);*')
	// var contentDisposition = decodeURI(res.headers['content-disposition'])
	// var contentDisposition = decodeURI(mimeMap.zip)
	// var result = patt.exec(contentDisposition)
	// var fileName = result[1]
	// console.log(contentDisposition)
	aLink.href = URL.createObjectURL(blob)
	aLink.setAttribute('download', fileName) // 设置下载文件名称
	document.body.appendChild(aLink)
	aLink.click()
	document.body.removeChild(aLink)
	window.URL.revokeObjectURL(aLink.href)
}
